Inside the Delta Fieldbus Solutions range, we provide several different field-bus (Modbus, Ethernet, CanOpen, Profibus, DeviceNet, etc…) and almost for all of them we have Remote Terminal Units (RTU) to help us to solve us a lot of long distance troubles.
In this case the application is with the Ethernet Modbus TCP/IP Field-bus (RTU-EN01).
This device is designed to setup remote I/O trough Ethernet Modbus TCP/IP, but it has also another capability.
This device could be the node to have a whole modbus network below him. like the picture attached.
So below I’ll try to show you how to access to those slave PLC’s from the SV28 Master like a remote I/O modules. Of course you can connect in spite of PLC’s some inverter, servomotor or temperature controller.
The example consists in receive in the 28SV Master the DI/DO status of the 14SS slaves with ID:4 and 5.
2. Open the DCI Soft, and detect the DVPEN01-SL. Go to Data Exchange and set as the picture below
4. Finally download the examples attached and in theory you have to see the next
Master D100 map to Y0~Y7
Master D200 map to Y10~Y17
( refer to DtoCoil_2.dvp)
Now you only have the problem to decide how big is your network!